仅限FileUpload图片扩展

本文介绍了仅限FileUpload图片扩展的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我创建了一个Fileupload，我只想将其用于从工具箱创建的图像，但是在浏览时我只希望允许图片扩展名?

I have created an Fileupload that i only want to use for images that i have created from the toolbox but when browing i only want to allow picuture extensions? anyone that know how i could start?

推荐答案

if (fileupload1.HasFile)
{
FileInfo finfo = new FileInfo(fileupload1.FileName);
string fileExtension = finfo.Extension.ToLower();
/*compare this with a list of acceptable extensions..
 if it contains in list then
 fileupload1.SaveAs(filename);
 else return with a message..*/

}

或者通过javascript，您可以尝试这样..

Or by javascript you can try like this..

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title></title>
  <script language="JavaScript">
      function CheckType() {
          var id = document.getElementById('fileupload1').value;

          if (id != '') {
              var myextensions = /(.jpg|.jpeg|.gif)

这篇关于仅限FileUpload图片扩展的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！